308 GLOSSARY. 



Berry. Botanically a fleshy fruit (e.g. Grape, Currant). Com- 

 monly applied to many kinds of fruits (e.g. Strawberry, 

 Mulberry). 



Blade of a leaf. The expanded portion; the wings. 



Blight. The dying without apparent cause of the tenderer parts 

 of plants. 



Board-foot. The unit of board measure; equivalent to a board 

 12 in. X 12 in. X 1 in. One cubic foot is considered as equiv- 

 alent to ten board feet, allowing for waste in working. 



B. M. Abbreviation for board measure (q.v.). 



Board measure (B. M.). The system used by lumbermen in which 

 the board-foot (q.v.) is the unit. 



Bract. A much-reduced leaf. 



Broad-leaved trees. Applies to trees whose leaves have a broad 

 flat surface, unlike the needle- or awl-shaped leaves of the 

 conifers. 



Budding. The operation and process of inserting a bud with the 

 intention that it shall grow. 



Bud-division. A term including all methods of propagation ex- 

 cept by seed (e.g. Grafting, Laj'^ering, etc.). 



Bud-variety. A strange variety or form appearing without obvi- 

 ous cause upon a plant or in cuttings or layers; a sport. 

 A bud-variety springs from a bud in distinction from a 

 seed-variety, which springs from a seed. 



Callus. The new and protruding tissue which forms over a wound, 

 as over the end of a cutting. 



Calyx. Outer circle of leaves about a flower. 



Cambium. In trees and shrubs, the layer of new growing tissue 

 between the bark and wood. 



Cants. A term used in mills to designate the pieces cut from the 

 sides of a log and which are to be again cut into quarter- 

 sawed lumber. It is sometimes also applied to the squared 

 centerpiece of the log. 



Carbon dioxide. A gas composed of one part of carbon to two 

 parts of oxygen; carbonic-acid gas. 



Carpel. A simple pistil or one of the divisions of a compound 

 pistil. 



Catkin. A scaly spike-like dense flower cluster (e.g. Wiliow, 

 Birch). 



Cell. The anatomical unit of living tissues. 



Chlorophyll. The green coloring matter of plants; leaf-green. 



Ciliate. Hairy on the margin. 



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